AP
Maxing
Subject home
Spaced practice
Full exams
Account
About us
AP Biology
Every unit starts with a free diagnostic. Unlock lessons and post-assessments for $15, one time.
Sign in to unlock — $15
Unit 1 · Chemistry of Life
Open the unit guide and all materials →
Free pre-assessment
Unit 2 · Cell Structure and Function
Open the unit guide and all materials →
Free pre-assessment
Unit 3 · Cellular Energetics
Open the unit guide and all materials →
Free pre-assessment
Unit 4 · Cell Communication and Cell Cycle
Open the unit guide and all materials →
Free pre-assessment
Unit 5 · Heredity
Open the unit guide and all materials →
Free pre-assessment
Unit 6 · Gene Expression and Regulation
Open the unit guide and all materials →
Free pre-assessment
Unit 7 · Natural Selection
Open the unit guide and all materials →
Free pre-assessment
Unit 8 · Ecology
Open the unit guide and all materials →
Free pre-assessment